package iOperation;

import book.Book;
import book.BookList;

import java.util.Scanner;

/**
 * @Author: Lenovo
 * @Date: 2024/5/24 19:24
 * @description:
 */
public class DelOperation implements IOPeration {
    public void work(BookList bookList){
        System.out.println("删除图书...");
        System.out.println("请输入你想删除的书名");
        Scanner scanner=new Scanner(System.in);
        String name=scanner.nextLine();
        int currentSize=bookList.getUseSize();
        int i=0;
        int pos=-1;
        for (;i<currentSize;i++){
            Book book=bookList.getBook(i);
            if(book.getName().equals(name)){
                pos=i;
                break;
            }
        }
        if(i==currentSize){
            System.out.println("没有找到你想删除的图书");
            return;
        }
        //删除图书
        for (int j=pos;j<currentSize-1;j++){
            Book book=bookList.getBook(j+1);
            bookList.setBook(j,book);
        }
        bookList.setBook(currentSize,null);
        bookList.setUseSize(currentSize-1);
        System.out.println("删除成功!");
    }
}
